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ChemistryJEE Main 23 Jan 2026, Shift 2·Q18·MCQ·Easy–moderate

Structure of Atom · Photoelectric effect work function

The work functions of two metals (MA\mathrm{M_A} and MB\mathrm{M_B}) are in the 1 : 2 ratio. When these metals are exposed to photons of energy 6 eV, the kinetic energy of liberated electrons of MA:MB\mathrm{M_A : M_B} is in the ratio of 2.642 : 1. The work functions (in eV) of MA\mathrm{M_A} and MB\mathrm{M_B} are respectively.
  1. (1)3.1, 6.2
  2. (2)2.3, 4.6
  3. (3)1.4, 2.8
  4. (4)1.5, 3.0

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See the full 23 Jan 2026, Shift 2 paper